---
id: CVE-2026-43257
title: 'media: cx88: Add missing unmap in snd_cx88_hw_params()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  media: cx88: Add missing unmap in snd_cx88_hw_params()

  In error path, add cx88_alsa_dma_unmap() to release
  resource acquired by cx88_alsa_dma_map().
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= b2c75abde0debfb824f72845c3ed77d4b66798a0 <
    f0d7f735eba963742009b0706e19dd0bed91537a
  - >-
    Linux >= b2c75abde0debfb824f72845c3ed77d4b66798a0 <
    dc911fccc6e08ef46a66b2a42a764252b001ee3c
  - >-
    Linux >= b2c75abde0debfb824f72845c3ed77d4b66798a0 <
    24f3dabeb97bd0bec8c1c926c97e3eb6a8129225
  - >-
    Linux >= b2c75abde0debfb824f72845c3ed77d4b66798a0 <
    10ab64f8efc2f479293dce929fde326c285fc96f
  - >-
    Linux >= b2c75abde0debfb824f72845c3ed77d4b66798a0 <
    e3fb15aadfc8643203bbdf97ace0396e4586fa64
  - >-
    Linux >= b2c75abde0debfb824f72845c3ed77d4b66798a0 <
    1ce8c2a8f050a23240553c8bae628ac623f9dbc1
  - >-
    Linux >= b2c75abde0debfb824f72845c3ed77d4b66798a0 <
    3baefeeb7b85e1e34eebef399ffa312be7179e30
  - >-
    Linux >= b2c75abde0debfb824f72845c3ed77d4b66798a0 <
    dbc527d980f7ba8559de38f8c1e4158c71a78915
  - Linux 3.19
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T15:31:37.833374Z'
published: '2026-05-06'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T15:32:37.678Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-43257'
references:
  - url: 'https://git.kernel.org/stable/c/f0d7f735eba963742009b0706e19dd0bed91537a'
  - url: 'https://git.kernel.org/stable/c/dc911fccc6e08ef46a66b2a42a764252b001ee3c'
  - url: 'https://git.kernel.org/stable/c/24f3dabeb97bd0bec8c1c926c97e3eb6a8129225'
  - url: 'https://git.kernel.org/stable/c/10ab64f8efc2f479293dce929fde326c285fc96f'
  - url: 'https://git.kernel.org/stable/c/e3fb15aadfc8643203bbdf97ace0396e4586fa64'
  - url: 'https://git.kernel.org/stable/c/1ce8c2a8f050a23240553c8bae628ac623f9dbc1'
  - url: 'https://git.kernel.org/stable/c/3baefeeb7b85e1e34eebef399ffa312be7179e30'
  - url: 'https://git.kernel.org/stable/c/dbc527d980f7ba8559de38f8c1e4158c71a78915'
tags:
  - cve.org
epss: 0.00128
epssPercentile: 0.02475
ingestedAt: '2026-11-06T15:54:04.004Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

media: cx88: Add missing unmap in snd_cx88_hw_params()

In error path, add cx88_alsa_dma_unmap() to release
resource acquired by cx88_alsa_dma_map().

## Affected

- `Linux >= b2c75abde0debfb824f72845c3ed77d4b66798a0 < f0d7f735eba963742009b0706e19dd0bed91537a`
- `Linux >= b2c75abde0debfb824f72845c3ed77d4b66798a0 < dc911fccc6e08ef46a66b2a42a764252b001ee3c`
- `Linux >= b2c75abde0debfb824f72845c3ed77d4b66798a0 < 24f3dabeb97bd0bec8c1c926c97e3eb6a8129225`
- `Linux >= b2c75abde0debfb824f72845c3ed77d4b66798a0 < 10ab64f8efc2f479293dce929fde326c285fc96f`
- `Linux >= b2c75abde0debfb824f72845c3ed77d4b66798a0 < e3fb15aadfc8643203bbdf97ace0396e4586fa64`
- `Linux >= b2c75abde0debfb824f72845c3ed77d4b66798a0 < 1ce8c2a8f050a23240553c8bae628ac623f9dbc1`
- `Linux >= b2c75abde0debfb824f72845c3ed77d4b66798a0 < 3baefeeb7b85e1e34eebef399ffa312be7179e30`
- `Linux >= b2c75abde0debfb824f72845c3ed77d4b66798a0 < dbc527d980f7ba8559de38f8c1e4158c71a78915`
- `Linux 3.19`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.